Pipe reamer



- Feb. 3, 1948. E. p. STANLEY PIPE REAMER Filed June 19, 1947 INVENTOR. [mo/7,0. Stanley I Patented Feb. 3, 1948 UNITED STATES PATENT OFFICE;

" w I r 2,435,413 V 1 V PIPE REAMER f Emory Day Stanley, Cranford, N. J. Application J ne 19, 1947, SerialNo. 755,567-

The invention relates to means for reaming out the layer of hardash that forms on the inside of a smoking pipe. V p

Among the prime objects of the invention are ease and efiiciency of operation, combined with cheapness and simplicity of construction. Also it is desirable that the reamer shall bellseful for pipe bowls of various sizes, that it shall be self centering and shall avoid the localizing of lateral pressure which may result in the bursting of the pipe bowl.

These and other objects are accomplishedby the reamer of this invention Essentially it has a base member with a -rounded bottom which more or less conformstothebottom of the p bowl and serves to center the reamer in the bowl. In addition this rounded bottom has burrs formed on its surface which cooperate in the scraping of the ash, particularly inthe bottom of the bowl. V l I A blade is laid in a slot in the top face of the base member and preferably protrudes at both ends and has a suitablecutter on each protruding end. The blade is removable and difierent length blades can be used for difierent size pipes.

As a practical construction, the base member may be a hollow shell or cup of substantially semispheroidal shape with the burrs struck out from its wall, being of suitable sheet metal, such as steel. Its top edge will be cut down at opposite points to provide a diametral slot into which the blade will fit, its width and height corresponding to those of the slot.

To secure the blade in the slot during operation, the invention contemplates an axial socket in the bottom of the cup with its top face on the level of the bottom of the slot so that the blade rests upon it. A hole through the blade accommodates a stem which engages in the socket, as by screw threads, and means, such as an integral collar on the stem, bear on the top of the blade and hold it in the slot. The stem is provided with a handle to facilitate turning.

The illustrated embodiment of the invention will now be described, after which the 'inven tion will be pointed out in claims.

Fig. 1 is-an elevation'of a reamer-illustrative of the invention and shown on an enlarged scale.

Fig. 2 is a sectional plan of the same in the plane of line 22 of Fig. 1.

Fig. 3 is a bottom plan of the same.

Fig. 4 is a sectional elevation on the same scale, showing the reamer with the handle broken away in operative relation to a pipe bowl, the top portion of which is shown, the plane of section 6Claims. (01. 131246) g of the. reamer being..on.line 4-.4 of. Fig.2, looking in the direction of the arrows.

Fig. .5 is a sectional elevation of the reamer elements shown inFig. 4 but taken on a plane at right anglesto Fig. 4, namely, on the plane of: line 5,5 ofFig. 3, looking in the direction of the arrows. Y

In the construction shown, the base member is a hollow cup I of steelor other suitable sheet metal and is sphericalin shape and comprises substantially half of a complete sphere. Formed on its surface are a series of grating projections, such as burrs 2, which may well be formed by slitting the wall and extruding the metal to the shape of a concavo-convex projection, facing in the direction of turning so that collectively they provide a continuous cutting or abrasive surface when revolved against a softer surface of corresponding concavity.

Secured in the bottom of the cup I, as by welding, is an attaching column or socket member 3 which maybe circular in cross section and has an axial recess which is internally screw threaded. On diametrically opposite sections the shell or cup l is slotted or cut out, as indicated. The slot thus formed is shown as of the same width as the diameter of the socket member 3 and of a depth to the level of the top face of the socket member. Laid in this slot is a blade 4. In cross section it is of a size to fill the slot. In length it exceeds the diameter of the cup, and hence when centrally disposed in the slot it projects radially at both ends. Being of the width of the slot,

' it is of the width of the socket member 3 on which it rests. Midway of its ends it is provided with a transverse opening from top to. bottom, and whentheparts are assembled the blade is so disposed that this opening is in line with the threaded opening in the socket member 3.

A stem fi ente rs these alined openings and secures the blade to\t h e cup. The end of the stem is screw threaded t'mengage in the socket opening. The section immediately above the screw threads is sinootlLand of a size and length to fit into the opening 'in the blade 4. Immediately above this smooth secti is an integral collar 6, the plane bottom face of w .h bears on top of the blade when the stem is screwed. into the socket. Thus the blade is clamped to the base. I

A suitablehandle 1 is secured to the stem 5,

being shown'as a rod fitting into a transverse hole in the stem.

The blade 4 is shown as having a cutter on each hanging scraping or cutting edge 9 disposed in an axial plane.

The methodof use is illustrated in Fig. 4. As stated, a length of blade will be chosen which is. suited to the size of the pipe bowl. The parts ar assembled by laying the blade in the slot in the cup with its opening over the socket recess, and the end of the stem is inserted and screwed down as far as the collar 6 permits. Thereafter the reamer body will be turned in a clockwise direction by the turning of the handle.

The reaming has proceeded part way in the situation 'represented'inFige. A pipe bowl has an internal layer of hardened. ash ll. pip'e'is grasped in the left hand and the reamer is inserted with the right hand." The rounded bottom automatically centers the reamer. Inward. pressure "causes the point 8 to make a circular incision at the outer periphery of the area to be cleaned," and the character of the ash is such that this incision will tend to crumble it. The'edge' 9 follows'and cleans off the crumbled particles and assists by cutting and scraping. Fromtime't'o time, thereamer will need to be removed and the crumbled ash removed; A spoon shaped end l2 of the handle! will assist in this operation; Whenthe bottom of the bowl is reached, theburrs on the surface of the cup come'int'o operation and assist in grating away the 'ash deposit onthe roundedportion in the plane of the stem opening. "The ash does not 3. A smoking pipe reamer comprising a cup member of substantially semi-spheroidal shape having a diametral slot in its annular edge, a threaded socket member axially secured in the bottom of the cup member, a removable blade fitting in the slot and exceeding in length the diameter of the base member and having a cutter on each end and a central opening therethrough, a screw threaded stem extending throughsaid opening and threaded into the socket member and thereby securing the blade centrally disposed .on the cup member, and a handle on the stem. 4. A smoking pipe reamer comprising a base "member including a shell of substantially semi- The r ordinarily deposit on" the central portion of the a o bottom'of the bowl, "hence the burrs will be omitted from" that area of the cup surface. Scraping of'or injury 'to the bottom of the bowl is also thus, avoided.

It will be n-of'te d that the operation produces but a small componentof outward pressure, and is therefore unlikely to crack the pipe bowl.

- I t'is obvious that the invention is not limited to the particular details of the construction shown and above described, but that the invention as defin ed in the; following claims may be variously otherwise embodied. What is claimed is;

1 A smoking'jpipereamer comprising a semispheroidal base member having a diametral slot in its plane side, a-removable'blade fitting in the slot and exceeding in length the diameter of the base member and having a cutter on one end, and an axially extending member provided with a handle and securing the blade in the base'memprotrudingfrom the base member. A smoking, pipereame r cgmprisin'g a semispheroidal base member provided with burrs on its spherical surface andhaving a diametral slot in its plane side, a removable blade member fitting in the slot and exceeding in length the diameter of 6igwas'e"inember and-having a cutter on one en and an axially extending member provided f... (with a handle and. securing the blade in the base member with the end of the blade having the cutter'protruding' from the base member.

spheroidal shape having burrs struck out therefrom and having its annular edge slotted in diametrally opposed portions, and an internally member including a shell of substantially semispheroidal shape having burrs struck out there from and having its annular edge slotted in di-' ametrally opposed portions, and an internally threaded socket member secured axially therein,

a removable blade extending across the open side of the base member and fitting in the slot in the edge andhaving an opening therethrough and being of a length to protrude beyond'the base member at both ends when the opening is axially over the socket and having a cutter on each of the protruding ends, a stem passing through the opening in the blade and engaged in the socket and having means to bear onthe outer side of the blade, anda handle on the stemj 6. A smoking pipe reamer comprising a base member including a shell of substantia1ly*semi spheroidal shape having burrs struck out there: from and having its annular edge slotted in diametrically opposed portions, and an internally threaded socket member secured axialiy'therein; the socket member havingsubstantiallythefsaine width as the slot and having its top face ona blade being such that it protrudes beyond the base member at both ends when the lop'ening* is axially over the socket member; a cutter ion eacli I end of the blade, a stem p sing throughf opening and engaged i nithesocket, meanson the stem to hold the bla de in the slot when the'stem is smengaged, and a handle on the stem. ber'with the end of the biadc havmg the cutter a Number Name 7 "Date 1.651.651 Warman Dec. 6, 1927 1,998,698

Bach Apr. 23, 1935 

